Valve



March 10, 1931. J, W, wlNTER '1,795,815

VALVE Fileduan. 18, 1929- FG I . Patented Mar. 1o, 1931 -UN1TED STATES JOSEPH 'WILLIAM WINTER, or VrENrIELi), PENNsYLvANIA, 1 AssIGfNoR To" MASTER DOMESTIC RETRIGERATING ooMrANY, A CORPORATION or NEW YORK INC., orcoNsHoHooKEN, rENNsYLvANIA,

vALv'E Application med January 1e, 1929. serial No. 333,333.

This invention relates to valves-of the slide plunger. type adapted to alternately estab-A lish communication between a' .single inlet fluid which the valve is intendedto control,

by means .of a packing' which is continually pressed in frictional engagement with. the valve stem. Such construction and arrangement yrequires the expenditure of considerable energyto shift the valve thruout its range the other, practically without friction, andv to eect the sealing of the joint where the" of movement.

As hereinafter described, the purpose and movement of the valve from one Vextreme to val-veextends thru its casing to .the outer atmosphere, .by slightcompression of a closure carried. by the valve, and after it has .y reachedlits extreme position in either direc- '-tion.

lMy 'mproved valve is thus yadapted;Y for yoperation by Vthe comparatively. feeble energy of a thern1ostat,fsuch as a sylphon bel-l` lows containing Huid which expands and conperature. .This invention was particularly" tracts inaccordance withuchangesfin tem'- designed for embodiment in a refrigeratingl system ofthe ammonia absorption type, in-v cluding thermostatically operative controly, ling means of the character aforesaid and for controlling the supply ofcooling water to" the generator and condenser, in alteration.

'However', Ido not-desire to limit myself to such an embodiment or use of this invention.

My. invent-ion includes the various novel` v taken on the line II, II in Fig. I.

Fig. III is an elevation of the left hand end Az In said` figures; the valve casing 1 is con-A venient-ly formed'fof a rectangular stock bar` of bronzegor other suitable metal, having the iscrew threaded inlet port 2, intermediate of vits length, and the screw threaded outlet/p orts 3 and 4 upon respectively opposite sides thereof.. In the embodiment above contemplated, said inlet port 2 is in communication with theV water supply pipe 6 andsaid outlet ports 3 and 4 are respectively connected' by the pipes 47 and 8 with the cooling4 water containers of the condenser and generator. Commu-V .Vnication is established-ybetweensaid ports .thru the passage9 which is a. cylindrical drilled hole in which the axially'movable plunger valve-10 is mounted to reciprocate.

l Said valve is conveniently formed of a stainless steel stock drill rod which is lapped'in said passage soas toreciprocate freely therein, but in substantially water tight relation there-` withy at its full diameter. Said valve is reduced in diameter, conveniently by a turning operation, as indicated atl11. so that, inthe extreme left position shown, the water supply thru the pipe 6 isdelivered thru thepassage 9 tothe pipe 7 ,communication between said pipe 6 and the pipe l8being prevented by the closure'of the right hand end of said passage 9 by the full diameter of said valve 10, as shown in FigII.

The sliding joint between the valve and its casing, thus formed', permits only 'an ex- .in either direction when said passage isclosed by the'full diameter of the valve, and said leakage is' negligible asbetween the several ports. aforesaid. However, in order to pretremely minute leakage thru thep'assage 9 vent leakage around'the valve where it exr tends to the outer atmosphere, I provide that end of said valve casing with the screw thread 13 for` engagement with lthe screw cap 14 vwhich has thebearing' 15 drilled therethru kin coaxial relation with said passage 9 and in which the valve-10 is also lapped so as to be practically fluid tight, altho freeto slide axi'- l ally without appreciable friction. I provide inner face' of saidvcap with a similar-annular site faces inwhich leather washers 23 and 24 are carried. The effect of such constructionis the end o-f said casing 1, projecting into said f cap, with the annular seat 17 and provide the.

to the opposite extreme of its movement, in

means .does not oppose any frictional resist-V.

,ance .to the movement ofthe valve to the right,

which position communication between said ports 2 and 8 is shut oif by the full diameter of the valve 10, and communication is established between said ports 2 and thru said `,passage 9 around said reduced portion l1 of said valve. However, as said valve reaches-- its limit of movement in that direction, slight .to the `precise details of construction and ar. rangement hereinset forth, as it is obvious compression of the washer 24 against the seat 17 seals the joint between said valve l0 and the interior of said cap 14.

As indicated, the outside end of said valve 10 may be bifurcated to receive a link 26 whichV K is pivotally connected therewith by the pin #27, to operatively connect said valve stemV with the thermostatically actuated controlling, mechanism' above contemplated. However, said r`valve maybe provided with any `other suitable means to eect its axial reciprocation. Moreover, altho I iind it convenient to malte the reduced portionV il of said valve `l() cylindrical, by a turning operation, itmay be otherwise reduced, for instance, by flatten-Av ing diainetrically opposite faces of the cylindrical rod from which it is formed.

Therefore, I do notdesire to limit myself Ithat various modifications may be made there- 40 jin, without. departing from the essential features of my invention, asrdeiined in the appended claims.

I claim:

- 1.- In a valve, the combination with a casinghaving a cylindrical passage extending longitudinally therein from one end thereof, and ports extending transversely in said casing Vfrom theexteriorthereof into communication with said passage; said ports having tion with pipes; of a valve, comprising a cylindrical plunger fitted to slidein said passage with portions of said valve fitted in substantially fluid tight relation with the wall ofV said passage vsaid valve having a reduced portion adapted to be positioned between adjoining ports to establish communication `between I such ports; 'a screw threaded cap detachably i'itted upon one end of said casing,surround ing theend ofsa-id passage, and having a bear- 4,ing for said valve extending thru said cap, in coaxial relation with said passage; annular valve seats surrounding said passage and said Y, bearing, respectively on thefend of said casing and on the inner face of said cap ;'a stop collar,

vscrew-threads atst-heir outer ends for connecdetachably rigidly connected with said valve between said seats, and having recesses in the axially opposite faces thereof; and washers of compressible resilient packing material in said recesses; whereby said valve is freely movable from one extreme of its movement to the other, but the joint surrounding the portion of said valve extending to the outer .atmosphere is hermetically sealedat each extreme ofitsmovement by slight compression of said stop collartoward the adjacent seat.

2. ln a valve, the combination with a casing having a cylindrical passage extending longitudinallyl-thereinv. from one end thereof, and ports extending transversely in said casing from the exterior thereof into communication with said passage; said ports having means-at their outer ends for connectionA with pipes; of a valve, comprising a cylindrical plunger fitted to slide in said passagel with :portions of said valve fitted. in substantially fluid tight relation with the wall of said passageg'said valve having a reduced portion adapted tobe positioned between adjoining ports to establish communication between such'ports.; acap detachably fitted upon oneV end of said casing, surrounding the endwof said passage, and having a bearing for said valve` extending thru said cap, in coaxial relation i. with ,said passage; annular valve seats surrounding said passage and said bearing, respectively` on the end of said casing and on the inner face of said cap; a stop collar rigidly connected Y with said valverbetween said seats; and compressible resilient packing material upon axially opposite sides of ,said collar; whereby said valve is freely movable from-.one extreme of its movement to the other, but thefjoint surrounding the portion of saidvalve extending to the outer atmosphere isvhermetically sealed at each extreme ofits movementby slight compression of said stop collar toward i the adj acent` seat.

3'. vln a valve, the combination with a-casing having a passage extending longitudinally therein from one end thereof, and portsextending transversely in said casing from the yexterior thereof into communication with said passage of a valve, comprising a plunger tted to slide in said Ypassage withV portions of said valve fitted in substantially-fluid tight relation with the wallof said-passage; .said valve having a portion adapted to be positioned between adjoining .ports lto. establish communication between lsuch ports; kan annuz larseat surrounding saidpassage at the end of said casing, faninternal stop collar rigidly connected with .said valve oppositeto said seat; means,^on said vcasing,'forming an .-in-

, closure for said stop collarand a seatfor it ati! the outer extremity of its movement andcompressible resilient .p aching material upon said collar opposite to ,said/seats; whereby said valve'is freely movable from one extreme of :its movement to the other, and .the .joint .sur-` icc j rounding the portion of said valve extending to the outer atmosphere is hermetically sealed at the outer extreme-of its movement by slight compression of saidvstop collar toward the adj aeent seat. 4. In a valve, the combination With a oasing having a passa-ge extending longitudinally therein from one end thereof, and ports extending transversely in said casing from the exterior thereof into communication With said passage; of a valve, fitted to slide in said passage With portions of said valve iitted in v substantially fluid tight relation With the Wall of said passage; said valve having a portion adapted to be positionedvbetween adjoining ports to establish Vcommunication betvveenl such ports and a portion extending tothe outer atmosphere; a single stop lcollar conneoted With said valve, adapted'to cooperate 2o With the easing to limit the movement ofthe valve in both directions ,and packing material carried by said collar; whereby said valve is freely movable from one extreme of its movement to the other, and the joint surrounding the portion of said valve exv tending to the outer atmosphere is hermetioally sealed when the axial movement of said valve, in either direction is stopped by said collar. Y

In testimony whereof, I have hereunto signed my name at-Conshohooken, Pennsylvania, this seventh day of December, 1928. Y

JOSEPH WILLIAM WINTER. 

